[Event "Interzonal-07"]
[Site "Sousse"]
[Date "1967.11.12"]
[Round "21"]
[White "Portisch, Lajos"]
[Black "Geller, Efim P"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 c5 5. Bg2 cxd4 6. Nxd4 Nc6 7. Nc2 O-O 8. Nc3 d6 9. b3 Be6 10. Bb2 Qa5 11. Qd2 1/2-1/2